What are the benefits of pyrolysis treatment of domestic waste?

 

 

Sanitary landfills treat a large amount of garbage and consume a lot of land. The harmful leachate produced during the decay of garbage pollutes groundwater, which can cause unimaginable consequences. If it is not properly handled during landfill, it is easy to cause odor and the breeding of pests such as mosquitoes and flies. In addition, a large amount of flammable gas produced by landfills can explode. If the landfilled land is properly treated, the surface layer can be restored to use after 10 years, which is a long cycle. The composting method can not only consume garbage but also produce soil conditioners, provide various trace elements to plants, and correspondingly reduce the use of chemical fertilizers to maintain the virtuous cycle of nature. However, there are unfavorable factors such as heavy metals and pathogenic substances polluting the land in the composting method. The advantage of incineration is that it can process large and rapid amounts of garbage, generally reducing the volume by more than 90%, taking up less space, operating around the clock, and recovering energy. Unfortunately, secondary pollution is easily caused during the incineration process, especially the discovery of highly toxic dioxins, which requires further improvement of the incineration process. In comparison, pyrolysis has the advantages of incineration and is pollution-free to the environment, making garbage both energy-based and environmentally beneficial.

 

 

 

From the perspective of economic benefits, the sanitary landfill method has a simple process for treating domestic garbage, with low investment, large processing volume, and low operating costs. However, the current landfill is getting farther and farther away from the urban area, which will cause an increase in freight and processing costs. Composting is a way to treat garbage with some economic benefits. Incineration technology has a large one-time investment and high operating costs. The investment of the project is 700,000-900,000 yuan/ton, and the operating cost is 100 yuan/ton. The operating cost of pyrolysis technology is lower than that of incineration, and combustible gases can be recovered to obtain certain economic benefits.

 

 

Social benefits are also a major factor that must be considered. Sanitary landfills occupy a large area, with flying garbage, stinking odor, and breeding mosquitoes and flies. They must be kept away from human settlements. If properly handled, the impact can be eliminated in ten years. Countries with large land areas are still using it because of its small investment and large processing capacity. The composting method can only process organic matter in garbage. It must be sorted before garbage disposal, and some resources can be recycled. The secondary pollution of the incineration method is serious, which poses a certain threat to human physical and mental health. The pyrolysis method can obtain clean energy, which is convenient and fast, and has a bright future. In fact, social benefits and environmental and economic benefits are inseparable. The purpose of garbage disposal is to serve the society. Only by providing services and obtaining economic and environmental benefits can the entire society move towards a benign development track.

Taking all factors into consideration, the pyrolysis method of garbage will surely be valued by the world in future development due to its advantages of large processing capacity, no secondary pollution, and recyclable clean energy. It is a garbage disposal method with good prospects. Zhengzhou Dingli New Energy waste treatment equipment can classify waste according to material utilization categories. After classification, combustibles can be used for incineration power generation, humus soil can be used to cultivate urban landscape vegetation, brick and tile waste can be used for brick making after treatment, and only 5% of unusable materials are finally landfilled. After treatment, the harmlessness rate of stale waste reaches 100%, the reduction rate reaches more than 95%, the recycling rate reaches 95%, and the resource utilization rate reaches more than 90%.

 

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